diff options
| author | jeff <jeff@FreeBSD.org> | 2005-08-03 04:27:40 +0000 |
|---|---|---|
| committer | jeff <jeff@FreeBSD.org> | 2005-08-03 04:27:40 +0000 |
| commit | 4a761caec7754f1fc2754466099320c54bf45abb (patch) | |
| tree | 52986abea99ce3e4955fd106535de6f4e591bac2 /sys/powerpc | |
| parent | 24f85b0b69c29af04dc033d110270b9a40a1bcaa (diff) | |
| download | FreeBSD-src-4a761caec7754f1fc2754466099320c54bf45abb.zip FreeBSD-src-4a761caec7754f1fc2754466099320c54bf45abb.tar.gz | |
- Add support for saving stack traces and displaying them via printf(9)
and KTR.
Contributed by: Antoine Brodin <antoine.brodin@laposte.net>
Concept code from: Neal Fachan <neal@isilon.com>
Diffstat (limited to 'sys/powerpc')
| -rw-r--r-- | sys/powerpc/powerpc/db_trace.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/sys/powerpc/powerpc/db_trace.c b/sys/powerpc/powerpc/db_trace.c index a32625a..a30595c 100644 --- a/sys/powerpc/powerpc/db_trace.c +++ b/sys/powerpc/powerpc/db_trace.c @@ -32,6 +32,7 @@ #include <sys/systm.h> #include <sys/kdb.h> #include <sys/proc.h> +#include <sys/stack.h> #include <vm/vm.h> #include <vm/pmap.h> @@ -287,3 +288,25 @@ db_trace_thread(struct thread *td, int count) return (db_backtrace(td, (db_addr_t)ctx->pcb_sp, count)); } +void +stack_save(struct stack *st) +{ + vm_offset_t callpc; + db_addr_t stackframe; + + stack_zero(st); + stackframe = (db_addr_t)__builtin_frame_address(1); + if (stackframe < PAGE_SIZE) + return; + while (1) { + stackframe = *(db_addr_t *)stackframe; + if (stackframe < PAGE_SIZE) + break; + callpc = *(vm_offset_t *)(stackframe + 4) - 4; + if ((callpc & 3) || (callpc < 0x100)) + break; + if (stack_put(st, callpc) == -1) + break; + } +} + |
